Uly.me

cloud engineer

umount

GCS Fuse

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GCS Fuse allows you to mount a Google bucket as a file system. It’s similar to S3FS.

Setup repo

sudo tee /etc/yum.repos.d/gcsfuse.repo > /dev/null <<EOF
[gcsfuse]
name=gcsfuse (packages.cloud.google.com)
baseurl=https://packages.cloud.google.com/yum/repos/gcsfuse-el7-x86_64
enabled=1
gpgcheck=1
repo_gpgcheck=0
gpgkey=https://packages.cloud.google.com/yum/doc/yum-key.gpg
       https://packages.cloud.google.com/yum/doc/rpm-package-key.gpg
EOF

Yum install

sudo yum install gcsfuse

Login to GCP and mount. Run as a user and not root.

gcloud auth login
gcsfuse my-bucket /path/to/mount

Unmount

fusermount -u /path/to/mount

Force Umount if Busy

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If device is busy and you can’t umount it, try it with -l option (lazy unmount). Or you can force it.

# standard
umount /mnt/data
# lazy umount
umount -l /mnt/data
# force
umount -f /mnt/data

Lazy unmount is safer since it will detach immediately and clean up all references to the file system. Force is a bit more drastic.

Mount and Unmount EFS

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Here’s the command to mount and unmount AWS EFS. Assuming the EFS IP address is 10.0.0.23.

Mount:

mount -t nfs -o nfsvers=4.1,rsize=1048576,wsize=1048576,hard,timeo=600,retrans=2,noresvport 10.0.0.23:/ /efs

Umount:

# lazy unmount
umount -l /efs
# force unmount
umount -f /efs

You may have to force it if it’s busy.